> Cannot agree with that. If one does that or not, would depend on things like Service Level Agreements (SLA) — and one can have a pretty high SLA uptime %, wit

> Cannot agree with that. If one does that or not, would depend on things like Service Level Agreements (SLA) — and one can have a pretty high SLA uptime %, without sharding, e.g. if there's an underlying pretty stable hosting provider that live migrates if there's a hardware failure. Sorry, no. A single instance is never acceptable from any risk perspective, no matter what guarantees the hosting provider claims.